If the novel isn't repetitive vomit and the storyline still captivates me....I will read a long online novel until the end. Black Belly Miss is the only CN translated novel that, so far, falls into that category for me~
However, the length of a story doesn't matter, it's all about how well the author can captivate my attention and engage my feelings/intellect. Unfortunately, when translations are slow or incomplete, you can't guarantee a satisfying read from a long novel.